15284721982 has 8 divisors (see below), whose sum is σ = 22938949656. Its totient is φ = 7638405432.

The previous prime is 15284721971. The next prime is 15284721989. The reversal of 15284721982 is 28912748251.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15284721989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1972948 + ... + 1980679.

It is an arithmetic number, because the mean of its divisors is an integer number (2867368707).

Almost surely, 2^15284721982 is an apocalyptic number.

15284721982 is a deficient number, since it is larger than the sum of its proper divisors (7654227674).

15284721982 is a wasteful number, since it uses less digits than its factorization.

15284721982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955562.

The product of its digits is 645120, while the sum is 49.

The spelling of 15284721982 in words is "fifteen billion, two hundred eighty-four million, seven hundred twenty-one thousand, nine hundred eighty-two".